Press button marked 1. First 0 will be displayed. Use the arrow buttons on the right dial to increase or decrease the number. Once you have the right first number press 1 and then 0 will be displayed for the second digit to be entered. Repeat for each digit in the code pressing 1 to save and move the the next digit. Once all four entered press 1 to save the whole code.
Jrb, October 2014
